在位移位运算中,操作数左移一位,其结果相当于操作数: 【移位计算怪问题】C# uint64 左移位计算得到结果低位...
C\u8bed\u8a00\u95ee\u9898\uff0c\u5728\u4f4d\u8fd0\u7b97\u4e2d\uff0c\u64cd\u4f5c\u6570\u6bcf\u53f3\u79fb\u4e00\u4f4d\uff0c\u5176\u7ed3\u679c\u76f8\u5f53\u4e8e\u4ec0\u4e48\uff1f\u82e5\u5de6\u79fb1\u4f4d\uff0c\u5176\u7ed3\u679c\u76f8\u5f53\u4e8e\u4ec0\u4e48\uff1f1\u3001\u53f3\u79fb\uff0c\u9664\u4ee52\u53f3\u79fbn\u4f4d\u9664\u4ee52\u7684n\u6b21\u65b9\uff1b
\u53f3\u79fb\u7684\u6982\u5ff5\u548c\u5de6\u79fb\u76f8\u53cd\uff0c\u5c31\u662f\u5f80\u53f3\u8fb9\u632a\u52a8\u82e5\u5e72\u4f4d\uff0c\u8fd0\u7b97\u7b26\u662f>>\uff1b
\u53f3\u79fb\u5bf9\u7b26\u53f7\u4f4d\u7684\u5904\u7406\u548c\u5de6\u79fb\u4e0d\u540c\uff0c\u5bf9\u4e8e\u6709\u7b26\u53f7\u6574\u6570\u6765\u8bf4\uff0c\u6bd4\u5982int\u7c7b\u578b\uff0c\u53f3\u79fb\u4f1a\u4fdd\u6301\u7b26\u53f7\u4f4d\u4e0d\u53d8\uff0c\u4f8b\u5982\uff1a
inti=0x80000000\uff1b
i=i>>1\uff1b//i\u7684\u503c\u4e0d\u4f1a\u53d8\u62100x40000000\uff0c\u800c\u4f1a\u53d8\u62100xc0000000
2\u3001\u5de6\u79fb\uff0c\u4e58\u4ee52\u5de6\u79fbn\u4f4d\u4e58\u4ee52\u7684n\u6b21\u65b9\uff1b
\u5148\u8bf4\u5de6\u79fb\uff0c\u5de6\u79fb\u5c31\u662f\u628a\u4e00\u4e2a\u6570\u7684\u6240\u6709\u4f4d\u90fd\u5411\u5de6\u79fb\u52a8\u82e5\u5e72\u4f4d\uff0c\u5728C\u4e2d\u7528<<\u8fd0\u7b97\u7b26\u3002\u4f8b\u5982\uff1ainti=1\uff1b
i=i<<2\uff1b//\u628ai\u91cc\u7684\u503c\u5de6\u79fb2\u4f4d
\u5de6\u79fb\u5c31\u662f\uff1a\u4e22\u5f03\u6700\u9ad8\u4f4d\uff0c0\u8865\u6700\u4f4e\u4f4d
\u6269\u5c55\u8d44\u6599
\u7b26\u53f7\u4f4d\u5411\u53f3\u79fb\u52a8\u540e\uff0c\u6b63\u6570\u7684\u8bdd\u88650\uff0c\u8d1f\u6570\u88651\uff0c\u4e5f\u5c31\u662f\u6c47\u7f16\u8bed\u8a00\u4e2d\u7684\u7b97\u672f\u53f3\u79fb\u3002\u540c\u6837\u5f53\u79fb\u52a8\u7684\u4f4d\u6570\u8d85\u8fc7\u7c7b\u578b\u7684\u957f\u5ea6\u65f6\uff0c\u4f1a\u53d6\u4f59\u6570\uff0c\u7136\u540e\u79fb\u52a8\u4f59\u6570\u4e2a\u4f4d\u3002
\u8d1f\u657010100110>>5(\u5047\u8bbe\u5b57\u957f\u4e3a8\u4f4d)\uff0c\u5219\u5f97\u5230\u7684\u662f11111101
\u5728C\u4e2d\uff0c\u5de6\u79fb\u662f\u903b\u8f91/\u7b97\u672f\u5de6\u79fb(\u4e24\u8005\u5b8c\u5168\u76f8\u540c)\uff0c\u53f3\u79fb\u662f\u7b97\u672f\u53f3\u79fb\uff0c\u4f1a\u4fdd\u6301\u7b26\u53f7\u4f4d\u4e0d\u53d8\u3002\u5b9e\u9645\u5e94\u7528\u4e2d\u53ef\u4ee5\u6839\u636e\u60c5\u51b5\u7528\u5de6/\u53f3\u79fb\u505a\u5feb\u901f\u7684\u4e58/\u9664\u8fd0\u7b97\uff0c\u8fd9\u6837\u4f1a\u6bd4\u5faa\u73af\u6548\u7387\u9ad8\u5f88\u591a\u3002
b\u5e94\u8be5\u662f10113844513958002688\uff0c\u5341\u516d\u8fdb\u5236\u662f0x8c5b980000000000\uff0c\u4f4e\u4f4d\u5168\u662f0\uff0c\u6ca1\u9519\u7684\u3002
\u4f60\u7ed9\u7684\u503c\u6700\u540e\u9762\u5c11\u4e86\u4e00\u4f4d\uff0cwindows\u7684\u8ba1\u7b97\u5668\u8f93\u5165\u4e0d\u4e86\u8fd9\u4e48\u5927\u7684\u503c\uff0c\u56e0\u4e3a\u8fd9\u4e2a\u6570\u8d85\u8fc7int64\u4e86
左移n位就是乘以2的n次方
右移n位就是除以2的n次方
绛旓細宸︾Щn浣嶅氨鏄箻浠2鐨刵娆℃柟 鍙崇Щn浣嶅氨鏄櫎浠2鐨刵娆℃柟
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绛旓細宸︾Щ灏辨槸锛氫涪寮冩渶楂樹綅锛0琛ユ渶浣庝綅
绛旓細宸︾Щ浣嶅氨鏄瘮濡備簩杩涘埗 0000 1011 宸︾Щ涓浣嶅氨鏄 0001 0110锛岀浉褰撲簬涔2 鍙崇Щ浣嶇被浼硷紝 0000 1011 鍙崇Щ涓浣嶅氨鏄 0000 0101锛岀浉褰撲簬闄2
绛旓細涓嶅鍚锛屽乏绉搴旇鏄暣浣撳悜宸﹁竟绉诲姩锛濡倅=x<<2,灏辨槸x鐨勫乏杈瑰幓鎺2浣嶏紝鍚庤竟琛2涓0锛岀粨鏋滃簲璇ユ槸锛01001100
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